Elevator-gate.



G. NIELSEN.

ELEVAT'QR GATE. ,APPLIOATION FILED PEB. 8, 1909.

' 979,027. l l l Patented Dec.20. 1910.

Arm/mfr enaisTIAN NiELsEN, or CHICAGO, rumors.

i ELEVATOR-GATE.

Specification of Letters Patent. p Patented' Dec. 20, 1910.

Application filed February 8, 1909. Serial No. 476.806.

To all whom if may concern:

Be it known that I, CHRISTIAN Niniisnx, a

citizen of the United States, residing in the city of Chicago, county ofCook. and State of Illinois,y have invented a ceitain new and usefulImprovement in Elevator-Gates, of' h n n 1 weight 18, which-is limitedby stop 19, or

vwhich the following is a specification.

This invention relates to automatically closing elevator gates. Itsprincipal objects f are. to produce at slight expense a durablel andreliable device `occupying' but small space, and applicable chiefly tofactory and freight elevators, by means of which quick and convenientingress and egress` to and from such elevators and easy access to thecontrolling cable. is provided without the necessity of opening the gateto its full extent, and by means of which the gate when fully openedwill be held open as long as the elevator is in position for the landingin question, yet the gate is automatically closed as soon as theelevator leaves such position. l attain these objects by the meansillustrated in the accompanying drawing in which- Figure 1. is anelevation of my improved gate, as attached to the shaft-side of the wallor partition surroundino` the elevator, said gate being shown from tieside fronting the elevator-in wide open position. Fig. 2. is anelevation of my improved gate, as attached to the Hoor-side of the vWallor partition surrounding the elevator, said gate being shown from theside of the floor (looking toward the elevator) 'in closed position.Fig. 3. is a detail elevation of the automatic locking and releasingdevice lused in connection with my improved gate as shown in Fig. 1.Fig. 4. is a detail elevation of theA automatic locking and releasingdevice used in connection with my improved gate as shown in Fig. 2. Fig.5. is a cross section at plane *7, viewed from above, of the deviceshown in Fig. 4. I

Referring to the drawings, partition 8, between an elevator shaft andadjoining floors or landings, is provided, near the upper edge 9, ofopening 10, connecting one of said floors or landings with said shaft,with roller track i 11 which may be attached either to the elevator sideof said partition, as in Fig. 1.) or to the door side of said partition(as inA Fig. 2.) From this roller track is suspended, by means ofrollers 37, running on said track, bai` 12, provided above said rollerswith eX-l tension 13, and at appropriate height above the floor with.lock 14, adapted to engage catch 15 whichis fastened to partition 8 onthe same side as rollertrack 11. To bar 12 are fastened. likewise atappropriate height above the door, guard-cables 16, (or iii lieu thereofropes or chains) running over rollers 17 and attached with their otherends to other appropriate means, from traveling higher than necessary topermit lock 14 to engage catch 15, the purpose of this limitation beingto keep cables 16 from yielding to pressure when stretched acrossopening 10 by means of bar 12 being brought 'to the locked positionshown in Fig. 2. To bar 12 is also fastened, preferably somewhat belowroller track 11, cable 20, running over roller 21, and having fastenedto its other end weight 22 which is sutliciertly heavy to pullbar 12into the locked position shown in Fig.

1 (against the pull of weight 18 and cables 16) whenever bar 12 ispermitted to yield to the pull of weight 22.

Stops 23 are provided on either side ofopening 1() to limit the movementof bar 12, and to bring it into strictly vertical lposition Awheneverthe gate is fully opened or closed. Tubes 24 and 25 are preferablyprovided for weights 18 and 22, respectively, to travel in. To partition8 is rotatably secured, by means of bolt or pivot 26, trigger catch 27,placed above roller track 11isin such a position that it may be barelypassed by extension 13 when the gate consisting of bar 12 and cables 1G,is .fully opened. This trigger catch 27 is provided at its side facingaway from roller 21 with eccentric weight 28, at its ther than necessaryto bring extension 30` into vertical positioii,'pointing upward. EX-.tension 29 is so arranged as to be likewise in vertical position, butpointing downward, Whenever extension 30 is in vertical posi tion.lpointing upward. At its end opposite to that which contacts withextension 30, bolt 31, in the construction shown in Fig. 1., is providedwith a roller or projection 32 adapted to be engaged by cani 33,fastened by appropriate means tothe upper portion wise Wl :o le

oit .shown in the drawmfj; device:y in such a boli against exension stravel; thus bringing mul exiension 29 into 'verfuue end is accomplishedby a ,leali :o 3l fastened to one end Mseing' througll partition S, 1er:53ml of which is connected with bolt l with roller or projmvion Si;will Cause bolt; 3l to be A le *ille limit of its iravel againstexitensxon 30. As long as bolt 31 is held in i Fon, eritension 13 whichfor this rorided with sloping shoulfler asneel, in fully opening mygaie, l on Q9, in direction opposite to weight om on being released,sigg; emulsion 29, Cannot return, in e ille pull of *weight 22, becauseeecenl're 'weight 28, Nigger will zal. once fall beek into a posiichextension 25) points vertically and shuts he'sq'uere shoulder 36 olfexil-mslm] LI-lt preventing it from pzissng. ls .soon lraowever as (bymo ving the elevatorenr up or l '\.fu} com 33 is removed fromengaggewenii with roller or projection 32 or 3l he (use may be) bolt 31is released nml will "oe pushed badi by extension 80, under lie :e ofshoulder 36 against f x. 1 en@ n by the pull of. weight', releasingextension lhlanfl with it ,v mr l?! and causing it tmloe :ruhr

n aimer 'iler-'L 'fo-nlnet of cmu 33 emes? meieelly locked lay oel: l-lto earch lli, 11-

l i eielensllj; pulling cables l@ taut across sen ing l0. By adjustingthe length and posiM tion of cam it can be readily determined just howfar ne elevaorer o which il) is attached shall be allowed to travelabove or below the level. of the lower edge of open ing l0, before bolt3l is released.

l am aware that automatic closing gaies for freight and factoryelevators are not new; but all such gates of which l1l Ve knowledge havean up and down motion, and require to be fully or almost fully, openedto admit even a single person, or to give convenient access to thecontrolling cable. l

lll/1mi I claim and inend to protect by Lelers Patent, sl l. Anelevatoegateg consisting of :l ver fgiillmr and horizontal cablesattached to said bar, in eombinio with mountings for seid har andcables; a weighs` attached lo :asiel cables, and means limiting theupwarcl travel of said Weight5 for die purpose clese'rbed.

)in elevator gate, consisting of a vertical bar and horizontal cablesauehefl to seid har, in combination. will; molmtings for smid bar andcables; a weight atrae-hed to said Cables; and a stop-piu limiting theupward irevel of said Weight; substantially :md for the purposedescribed..

UHRS'IIAN NELS ENA Y E. L BUCKLIN,

CHARLES A. LAWES.

